Building Technologies Program eere.energy.gov 1 Public Service of Colorado Ponnequin Wind Farm 

## BUILDING TECHNOLOGIES PROGRAM

Commercial Refrigeration Equipment (CRE) Test Procedure Notice of Proposed Rulemaking (NOPR) Public Meeting 

## Charles Llenza January 6, 2011 CRE - 2010-STD-0003@ee.doe.govBuilding Technologies Program eere.energy.gov 2 Proposed Test Procedure Amendments Burden of Testing & Regulatory Review Closing Remarks, Contacts & Information 

## Public Meeting Topics

4 5 6 Rulemaking History & Timelines 2 Test Procedure Rulemaking Scope 3 1 Welcome, Introductions & Opening RemarksBuilding Technologies Program eere.energy.gov 3 

### • Meeting Agenda • Introductions • Role of the Facilitator • Ground Rules

– Listen as an ally

– Focus on the issues

– Use short, succinct statements/keep to the point

– One person speak at a time (raise hand to be recognized; state your name for the record)

– Hold sidebar conversations outside the room

– Set cell phones to silent/vibrate • Housekeeping Items 

## Welcome, Introductions & Opening RemarksBuilding Technologies Program eere.energy.gov 4 

### • To present DOE’s proposed test procedure amendments. • To answer questions about DOE’s proposed approach. • To seek comment & input from participants on the DOE’s proposed testing. • To discuss the Federal Register published the NOPR, 75 FR 51596, November 24, 2010. The NOPR:

– Gives notice of the public meeting and availability of the NOPR document.

– Describes the proposed amendments to the CRE test procedure. • Please submit comments no later than January 24, 2011. • Document and materials from today’s public meeting will be available online: http://www1.eere.energy.gov/buildings/appliance_standards/commercial/refrigeration_equipment.html 

## Welcome, Introductions & Opening Remarks Public Meeting PurposeBuilding Technologies Program eere.energy.gov 5 

## Welcome, Introductions & Opening Remarks
Issue Box - In the test procedure NOPR for commercial refrigeration equipment, DOE welcomes comment. Throughout this presentation, specific issues will be raised for discussion on slides such as this, with identifying numbers corresponding to those in the test procedure NOPR document. In addition, DOE has added questions that are not in the framework document. These questions are identified by a letter. Request for Comment FormatBuilding Technologies Program eere.energy.gov 6 

## Welcome, Introductions & Opening Remarks


## At this time DOE welcomes opening remarks on the NOPR document for the proposed test procedure for commercial refrigeration equipment.Building Technologies Program eere.energy.gov 7 Proposed Test Procedure Amendments Burden of Testing & Regulatory Review Closing Remarks, Contacts & Information 

## Public Meeting Topics

4 5 6 Rulemaking History & Timelines 2 Test Procedure Rulemaking Scope 3 1 Welcome, Introductions & Opening RemarksBuilding Technologies Program eere.energy.gov 8 

## Rulemaking History & Timelines

• DOE published a final rule on January 9, 2009 (74 FR 1092) ; effective January 1, 2012. • EPACT 2005 amendment to EPCA also directed DOE to determine whether to amend the standards prescribed both by DOE and in EPACT 2005 and, if necessary, publish amended standard by January 1, 2013. • DOE is currently conducting a separate rulemaking to address whether to amend energy conservation standards for commercial refrigeration equipment set by EPACT 2005 and DOE (EERE - 2010- BT- STD - 0003 ). • Any amended standards established by DOE would apply to equipment manufactured 3 years or more after the publication of such a rule, or a maximum of 5 years.

2005 2009 2010 2012 2013 2016 DOE sets standards for ice-cream freezers, remote

condensing equipment, and self-contained equipment without doors DOE determines whether to amend

standards for all CRE equipment (EPACT and 2009 rulemaking) EPACT prescribes standards for SC equipment with doors EPCA establishes energy conservation program

1975 

## CRE Standard Regulatory HistoryBuilding Technologies Program eere.energy.gov 9 

## Rulemaking History & Timelines

• EPCA, as amended, directs that:

– Compliance with energy conservation standards is shown using prescribed test procedures. (42 U.S.C. 6311(3) and (4))

– Test procedures for commercial refrigerators, freezers, and refrigerator-freezers must be:

1) the test procedures determined to be generally accepted industry testing procedures; or 2) rating procedures developed or recognized by ASHRAE or by ANSI. (42 U.S.C. 6314(a)(6)(A)( i ))

– The initial test procedures for self- contained refrigerators, freezers, and refrigerator-freezers with doors shall be the ASHRAE 117 test procedures that went into effect January 1, 2005. (42 U.S.C. 6314(a)(6)(A)(ii)) 

## CRE Test Procedure Regulatory HistoryBuilding Technologies Program eere.energy.gov 10 

## Rulemaking History & Timelines

• EPCA states that:

– If ASHRAE 117 is amended, the Secretary must, by rule, amend the DOE test procedure to ensure consistency with the amended ASHRAE 117 unless certain findings are made by clear and convincing evidence. (42 U.S.C. 6314(a)(6)(E))

– If a test procedure other than ASHRAE 117 is approved by ANSI, the Secretary must review the relative strengths and weaknesses of the new test procedure relative to the ASHRAE 117 test procedure and, based on that review, adopt one new test procedure for use in the standards program. (42 U.S.C. 6314(a)(6 )(F ))

– At least once every 7 years DOE must conduct an evaluation of each class of covered equipment to determine whether to, among other things, amend the test procedures for such equipment. ( 42 U.S.C. 6314(a )(1)) 

## Authority to Amend CRE Test ProcedureBuilding Technologies Program eere.energy.gov 11 

## Rulemaking History & Timelines

• On December 8, 2006, DOE established the current test procedure for commercial refrigeration equipment, which references the Air- Conditioning and Refrigeration Institute (ARI) Standard 1200 - 2006.

– ARI 1200 - 2006 references ASHRAE Standard 72 - 2005 as the method of test . • DOE adopted AHAM Standard HRF - 1 - 2004 for measuring refrigerated compartment volume. 71 FR 71370 (Dec. 8, 2006). 

## Current CRE Test ProcedureBuilding Technologies Program eere.energy.gov 12 

## Rulemaking History & Timelines

• The current DOE test procedure contains the following rating temperatures which are applicable to all commercial refrigeration equipment for which energy conservation standards have been set in EPACT 2005 and by DOE in 2009:

• The current test procedures for commercial refrigeration equipment appear under Title 10 of the Code of Federal Regulations part 431, subpart C. Equipment Rating Temperature Commercial refrigerators and refrigerator compartments 38 ° F ( ± 2 ° F ) Commercial freezers and freezer compartments 0 ° F ( ± 2 ° F ) Commercial ice - cream freezers - 15 ° F ( ± 2 ° F ) 

## Current CRE Test Procedure Test TemperaturesBuilding Technologies Program eere.energy.gov 13 

## Rulemaking History & Timelines

• The energy conservation standard rulemaking is in the preliminary analysis stage & these results will be presented in a separate public meeting. Energy Conservation Standards (ECS) Test Procedure (TP) Framework Document Preliminary Analysis NOPR Final Rule
NOPR Final Rule 

## CRE Standard and Test Procedure Rulemakings TimelinesBuilding Technologies Program eere.energy.gov 14 

## Rulemaking History & Timelines

2010

ECS Framework Document Public Meeting May 18, 2010 ECS Preliminary Analysis Public Meeting Planned - Spring 2011 ECS NOPR Public Meeting Planned - Winter 2012 2014 2012 2013 2015 2016 Proposed Final Rule Effective Date January 1, 2016 

## CRE Energy Conservation Standard Rulemaking Timeline

TP NOPR Public Meeting January 6, 2011 2011Building Technologies Program eere.energy.gov 15 

## Rulemaking History & Timelines
EPCA Provision Authority Effective Date Energy Conservation Standard DOE 3 years after standard final rule publication (January 1, 2016) Test Procedure DOE Concurrent with amended energy conservation standard Additional Comment A - DOE welcomes comment on the effective date of the test procedure final rule. 

## Effective DatesBuilding Technologies Program eere.energy.gov 16 Proposed Test Procedure Amendments Burden of Testing & Regulatory Review Closing Remarks, Contacts & Introductions 

## Public Meeting Topics

4 5 6 Rulemaking History & Timelines 2 Test Procedure Rulemaking Scope 3

1 Welcome, Introductions & Opening RemarksBuilding Technologies Program eere.energy.gov 17 

## Test Procedure Rulemaking Scope

• The current DOE test procedure allows for testing to show compliance with energy conservation standards set for:

– self- contained commercial refrigeration equipment with doors, as established by EPACT 2005, and

– remote condensing commercial refrigeration equipment, self- contained equipment without doors, and ice - cream freezers for which DOE set energy conservation standards in 2009. 

### • DOE intends to include in the scope of the current test procedure rulemaking both the equipment with standards prescribed in EPACT 2005 and the equipment for which DOE established energy conservation standards in 2009. 

## Test Procedure ScopeBuilding Technologies Program eere.energy.gov 18 

## Test Procedure Rulemaking Scope

• The DOE TP NOPR does not currently include test procedures for secondary coolant equipment. Additional Comment B - DOE welcomes comment on the exclusion of secondary coolant systems in the DOE test procedure. Secondary Coolant Coverage Current Rule Proposed Energy Conservation Standard Not covered within the scope of commercial refrigeration equipment DOE does not plan to cover secondary coolant systems in the current ECS rulemaking Test Procedure Excluded from ARI 1200- 2006 Excluded from AHRI 1200- 2010 

## Secondary Coolant EquipmentBuilding Technologies Program eere.energy.gov 19 

## Test Procedure Rulemaking Scope

• At the May 18, 2010 CRE Framework document public meeting, several interested parties suggested that DOE should incorporate provisions to capture the effects of technologies that reduce energy consumption at variable refrigeration load or variable time periods. 

## Transient Technologies Operate as a function of variable ambient conditions Operate at variable times • Higher efficiency expansion valves • Condenser fan motor controllers • Anti - sweat heater controls • Lighting occupancy sensors and controls • Night curtains 

### Part Load Technologies Energy Conservation Features 

## Testing of Transient TechnologiesBuilding Technologies Program eere.energy.gov 20 

## Test Procedure Rulemaking Scope

• AHRI Standard 1200 and ASHRAE Standard 72 call for a steady- state test that captures some part load effects and is significantly less burdensome than a test that would capture all such effects. A test procedure for part load technologies would likely require separate tests at multiple ambient conditions. • DOE’s proposed test procedure would capture variation in refrigeration load experienced during night curtain use for open cases and door opening events for display cases with doors. In addition, the 75 ° F and 55% relative humidity standard rating condition is typically part load, rather than maximum design load. • DOE believes that part load testing is not justified because of the increased burden. As a result, DOE proposes to continue to require testing at one standard rating condition, relying on the transient effects inherent in the proposed test procedure to capture part load performance. 

## Part Load Technologies – No Additional Testing ProposedBuilding Technologies Program eere.energy.gov 21 

## Test Procedure Rulemaking Scope

• DOE is considering certain technology options for the energy conservation standards:

– Lighting occupancy sensors and schedules controls.

– Night curtains. Item 3 - DOE requests comment on the burden to manufacturers associated with testing energy efficiency technologies other than those explicitly accounted for in this test procedure revision, namely night curtains and lighting occupancy sensors and scheduled controls. 

## Testing of Energy Conservation FeaturesBuilding Technologies Program eere.energy.gov 22 

## Test Procedure Rulemaking Scope

• DOE understands that some commercial refrigeration equipment is designed to operate at more extreme ambient conditions.

– NSF (National Sanitation Foundation) Type II equipment is tested at 80 ° F for food safety reasons. • Commercial refrigeration equipment will operate differently whether tested at the ASHRAE Standard 72 75 ° F / 55% RH standard rating condition or at more extreme conditions . • DOE believes commercial refrigeration equipment designed to operate at more extreme ambient conditions can be tested at the standard rating conditions prescribed by DOE without any significant additional burden on manufacturers. 

## Rating at Higher Ambient Temperatures

Item 2 - DOE requests comment on the burden to manufacturers associated with testing NSF Type II equipment at the standard test condition. Specifically, DOE requests comment and data on the ability of NSF Type II equipment to show compliance with DOE energy conservation standards when tested at the DOE standard rating condition.Building Technologies Program eere.energy.gov 23 

## Test Procedure Rulemaking Scope

• EPCA directs DOE to incorporate a measure of standby and off mode energy use into the test procedures for consumer products. (42 U.S.C. 6295( gg )(3)(A)) • EPCA does not require DOE to incorporate a measure of such energy use into the test procedures for commercial and industrial equipment. • In addition, commercial refrigeration equipment generally operates constantly to maintain product at a desired temperature. • Therefore, DOE does not consider a measure of standby and off mode energy use for commercial refrigeration equipment in the test procedure NOPR. 

## Standby and Off ModeBuilding Technologies Program eere.energy.gov 24 Proposed Test Procedure Amendments Burden of Testing & Regulatory Review Closing Remarks, Contacts & Information 

## Public Meeting Topics

4 5 6 Rulemaking History & Timelines 2 Test Procedure Rulemaking Scope 3 1 Welcome, Introductions & Opening RemarksBuilding Technologies Program eere.energy.gov 25 

### • DOE proposes amendments to its test procedure to: 

## Proposed Test Procedure Amendments 1) Update referenced industry test procedures to the most current versions:

– AHRI Standard 1200 - 2010.

– AHAM Standard HRF - 1 - 2008. 2) Incorporate provisions to address certain energy conservation features that are currently not accounted for in the DOE test procedure:

– Night curtains.

– Lighting occupancy sensors and scheduled controls. 3) Allow commercial refrigeration equipment that cannot be tested at the 38 ° F ( ± 2 ° F) rating temperature to be tested at its lowest application product temperature.Building Technologies Program eere.energy.gov 26 

## Proposed Test Procedure Amendments

• Since the publication of the 2006 test procedure Final Rule, AHRI and AHAM have updated their test procedures. The most recent versions are AHRI 1200 - 2010 and AHAM Standard HRF - 1 - 2008, which incorporate the following changes:

– AHRI 1200- 2010

– changes in equipment class nomenclature,

– method of normalizing energy consumption, and

– the ice - cream freezer test temperature.



### – AHAM Standard HRF- 1 - 2008

– reorganized some sections; however,

– content was not substantially changed. 

## Updated Industry Test ProceduresBuilding Technologies Program eere.energy.gov 27 

## Update Test Procedure References

• The updated AHRI Standard 1200 - 2010 has incorporated changes which align it with the current DOE test procedure. • DOE proposes updating the current DOE test procedure to reference AHRI Standard 1200 - 2010 and AHAM Standard HRF - 1 - 2008. Item 4 - DOE requests comment on updating the referenced industry test procedures to the most current versions. 

## Updated Test Procedure ReferencesBuilding Technologies Program eere.energy.gov 28 

## Proposed Test Procedure Amendments

Night Curtains 

### • A night curtain is:

– Designed to be used on an open case.

– Is typically made of an insulating material, for example insulated aluminum fabric.

– Is designed to be used when the merchandizing establishment is closed or the customer traffic is significantly decreased.

– Decrease infiltration and conductive and radiative heat transfer into the case. 

### Definition: Night curtain means a device that is temporarily employed to decrease air exchange and heat transfer between the refrigerated case and the surrounding environment. Additional Comment C - DOE requests comment s on the proposed definition for night curtain. 

### Address Energy Conservation Features – Night Curtain DefinitionBuilding Technologies Program eere.energy.gov 29 

## Proposed Test Procedure Amendments

• It is important to capture the differences in energy use reduction from different night curtain designs because of the large performance disparities that can exist due to differences in:

– emissivity of materials,

– insulating characteristics,

– night curtain design,

– case dimensions, and

– default infiltration load.
• A physical test will accurately capture differences in the energy conservation utility of night curtains as a function of night curtain characteristics and case dimension . 

## Night Curtains – Background and ApproachBuilding Technologies Program eere.energy.gov 30 

## Proposed Test Procedure Amendments

• DOE proposes to use the following test method, adapted from section 7.2 in ASHRAE Standard 72 - 2005, “Door- Opening Requirements”:

• 6 - hour test period chosen to approximate the typical usage of a night curtain.

– Previously used in other studies.

– Accounts for stocking time.

Night Curtain Requirements . For open display cases sold with night curtains installed, the night curtain shall be employed according to manufacturer instructions for a total of 6 hours, 3 hours after the start of a defrost period. Upon the completion of the 6 - hour period, the night curtain shall be raised until the completion of the 24- hour test period. 

## Night Curtain Proposed Test Method

Item 5 - DOE requests comment on the propos ed incorporation of night curtains into the DOE test procedure. DOE is especially interested in the appropriateness of the proposed 6 - hour test period when night curtains are deployed.Building Technologies Program eere.energy.gov 31 

## Proposed Test Procedure Amendments
Definitions: Lighting control means an electronic device that automatically adjusts the lighting in a display case at scheduled times throughout the day. Lighting occupancy sensor means an electronic device that uses passive infrared, ultrasonic, or other motion - sensing technology to detect the presence of a customer or employee, allowing the lights within the equipment to be turned off or dimmed when no motion is detected in the sensor’s coverage area. Additional Comment D - DOE requests comment on the proposed definitions for lighting occupancy sensor and lighting control. 

## Energy Conservation Features – Lighting Occupancy Sensor and Scheduled ControlsBuilding Technologies Program eere.energy.gov 32 

## Proposed Test Procedure Amendments

• Unlike fluorescent lighting, LED lighting is more amenable to turn off/on under cold conditions and suitable for use with occupancy sensors.
• Energy reduction due to lighting occupancy sensors and scheduled controls is two -fold: 1) reduction in direct electricity consumption when lights are off or dimmed, and 2) reduction in heat load on the refrigeration system. • DOE proposes to use an analytical method to calculate decreased energy consumption due to the use of lighting occupancy sensors and scheduled controls to simplify testing requirements and minimize additional burden on manufacturers. 

## Lighting Occupancy Sensor and Scheduled Controls – Background and ApproachBuilding Technologies Program eere.energy.gov 33 

## Proposed Test Procedure Amendments

• The proposed lighting occupancy sensor consists of 3 primary calculations: 1. Calculate direct energy use of lighting with occupancy sensors or scheduled controls installed.

– Requires default specifications for the time lighting is off or dimmed due to lighting occupancy sensors or scheduled controls. 

### 2. Calculate reduced refrigeration load when energy use of lights within the refrigerated volume is decreased.

– Requires default specifications for the EER of the compressor and to account for the fact that not all of the heat produced from the lights will impact the compressor load. 

### 3. Calculate the adjusted daily energy consumption based on the decreased lighting energy use and decreased compressor energy use. 

## Lighting Occupancy Sensor and Scheduled Controls – Proposed Test MethodBuilding Technologies Program eere.energy.gov 34 

## Proposed Test Procedure Amendments

• The time off period for scheduled controls was chosen to approximate the typical usage of lighting control products based on comments received during previous DOE rulemakings for this equipment. • The time off period for lighting occupancy sensors was derived based on the previously cited demonstration project conducted through the DOE GATEWAY program. Case has... Only scheduled lighting controls installed Only lighting occupancy sensors installed Both lighting occupancy sensors and scheduled controls installed Times are... t off,controls + t dim,controls = 8 hours t off,sensors + t dim,sensors = 10.8 hours t off,controls + t dim,controls = 8 hours AND t off,sensors + t dim,sensors = 2.8 hours 

## Determination of toff 

## and tdimBuilding Technologies Program eere.energy.gov 35 

## Proposed Test Procedure Amendments

• Note : The CECA includes a multiplication factor of 0.75 to account for the fact that not all of the heat produced from the lights will impact the compressor load. li l sc A (P t 1000 3.4121 (LEC ) CEC 0.75 EER ) **× × −**  **= ×** Eq. 4 Operating Temperature Class EER 1,2 Btu/W Medium 11.26 Low 7.14 Ice Cream 4.80 Note: 1. EER values for operating temperature classes are calculated based on the average EER value of all equipment in that class which was analyzed as part of the previous (2009) rulemaking. 2. These values only represent compressor EER and do not include condenser fan energy use. • EER for Self- Contained Commercial Refrigerated Display Merchandisers and Storage Cabinets 

## Calculation of Alternate Compressor Energy Consumption

• EER for Remote Condensing Commercial Refrigerated Display Merchandisers and Storage Cabinets = Table 1. in AHRI 1200- 2010Building Technologies Program eere.energy.gov 36 

## Proposed Test Procedure Amendments

Item 6 - DOE requests comment on the proposed calculation method for treatment of lighting occupancy sensors and controls in the DOE test procedure for commercial refrigeration equipment. Specifically, DOE requests comment on the values assumed for the time period when lighting is off or reduced due to lighting occupancy sensors or controls and the factor used to scale the amount of heat produced by case lighting. 

## Request for CommentBuilding Technologies Program eere.energy.gov 37 

## Proposed Test Procedure Amendments

• In the 2009 rulemaking, DOE found that only 1.7 percent of units under that rulemaking operated at temperatures other than the prescribed test temperatures, or “application product temperatures.”

– Of these, units that operated at 45 ° F had the highest shipments.

– Because of the low volume of shipments, DOE decided not to develop separate standards for this equipment. 72 FR 41162, 41168**−** 69 (July 26, 2007).
• At the Framework document public meeting, DOE received comments recommending the inclusion of “application temperatures” for the rating of commercial refrigeration equipment. 

## Testing at Lowest Application Product Temperature – Comments ReceivedBuilding Technologies Program eere.energy.gov 38 

## Proposed Test Procedure Amendments

• DOE understands that some equipment covered under this rulemaking is designed to operate at significantly higher temperatures (45, 55, or 60 ° F) and may not be able to maintain an integrated average product temperature of 38 ° F ( ± 2 ° F).

– Most of this equipment is self- contained equipment.

– Self- contained medium -temperature equipment was not covered in the 2009 rulemaking.

– Self- contained equipment is covered in the scope of the concurrent ECS and the test procedure rulemaking.
• AHRI Standard 1200 - 2010 has provisions for testing equipment at the application product temperature. 

## Lowest Application Product Temperature – BackgroundBuilding Technologies Program eere.energy.gov 39 

## Proposed Test Procedure Amendments

• However, equipment that operates at temperatures greater than the 38 ° F ( ± 2 ° F) rating temperature:

– may operate more efficiently if tested at temperatures other than 38 ° F ( ± 2 ° F), and

– may represent a large enough shipment volume to warrant separate consideration.
• DOE proposes including a provision for rating refrigerators that cannot operate at the prescribed 38 ° F ( ± 2 ° F) integrated average product temperature at the lowest application product temperature. 

## Lowest Application Product Temperature RatingBuilding Technologies Program eere.energy.gov 40 

## Proposed Test Procedure Amendments Definition: Lowest application product temperature means the lowest integrated average product temperature achievable and maintainable within ± 2 ° F for the duration of the test.

Item 7 - DOE requests comment on the provision for testing commercial refrigerators that cannot be tested at 38 ° F ( ± 2 ° F) at the lowest application product temperature. • When testing a case using the lowest application product temperature, the integrated average product temperature achieved during the test should be recorded and reported with energy consumption information. • Equipment tested at the lowest application product temperature will still be required to comply with the applicable energy conservation standard for its respective medium -temperature equipment class. 

## Lowest Application Product Temperature DefinitionBuilding Technologies Program eere.energy.gov 41 Proposed Test Procedure Amendments Burden of Testing & Regulatory Review Closing Remarks, Contacts & Information 

## Public Meeting Topics

4 5 6 Rulemaking History & Timelines 2 Test Procedure Rulemaking Scope 3 1 Welcome, Introductions & Opening RemarksBuilding Technologies Program eere.energy.gov 42 

### • DOE understands that amending the test procedures to incorporate the proposed changes and additions could increase the burden on manufacturers to quantify the performance of their equipment.
• EPCA requires that the test procedures promulgated by DOE be reasonably designed to produce test results that reflect energy efficiency, energy use, and estimated operating costs of the covered equipment during a representative average use cycle and not be unduly burdensome to conduct. (42 U.S.C. 6314(a)(2)) 

## Burden of Testing & Regulatory Review 

## BackgroundBuilding Technologies Program eere.energy.gov 43 

### • All commercial refrigeration equipment is currently required to be tested using the DOE test procedure.

• The updated versions of AHRI Standard 1200 - 2010 and AHAM HRF - 1 - 2008 do not vary substantially from the previously referenced versions. 

## Burden of Testing & Regulatory Review

Current Proposed Referenced Industry Test Procedures AHRI Standard 1200- 2006 AHAM HRF - 1 - 2004 AHRI Standard 1200- 2010 AHAM HRF - 1 - 2008 Burden One 24- hour test One 24- hour test 

## Current Burden of TestBuilding Technologies Program eere.energy.gov 44 

### • For equipment that has the option of being sold with night curtains or lighting occupancy sensors or controls installed, additional testing may be required.
• The following table shows an example for night curtains: 

## Burden of Testing & Regulatory Review Burden of Test – Energy Conservation Features
Case is only sold with night curtains Case is only sold without night curtains Case is sold both with and without night curtains Number of Tests ONE ONE • If complies with ECS w/o night curtains ONE • If does not comply with ECS w/o night curtains but does comply with night curtains TWOBuilding Technologies Program eere.energy.gov 45 

## Proposed Test Procedure Amendments

• Since the same test is being performed in both cases, DOE believes that this will not increase the burden of test for those manufacturers and is likely to lead to more representative energy consumption values. Current Proposed Referenced Industry Test Procedures AHRI Standard 1200- 2006 AHAM HRF - 1 - 2004 AHRI Standard 1200- 2010 AHAM HRF - 1 - 2009 Burden One 24- hour test One 24- hour test Temperature 38 ° F ( ± 2 ° F ) Lowest application product temperature 

## Burden of Test – Lowest Application Product TemperatureBuilding Technologies Program eere.energy.gov 46 

## Burden of Testing & Regulatory Review

Item 1 - DOE requests comment on its conclusion that the proposed test procedure amendments would not be unduly burdensome to conduct. • The proposed changes to the test procedure for commercial refrigeration equipment were chosen to help minimize the impact of additional testing.
• For the reasons stated previously, DOE believes that the proposed amended test procedures would not be unduly burdensome to conduct. 

## Proposed Burden of Test and Request for CommentBuilding Technologies Program eere.energy.gov 47 

## Burden of Testing & Regulatory Review

Item 8 - DOE seeks comments on the number of small businesses in the CRE market . • DOE has used the SBA definition of small entities:

– Commercial Refrigeration manufacturers are included in NAICS 333415, “Air- Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing.”

– The Small Business Administration standard for small entities in this industry description is < 750 employees.
• DOE found 22 manufacturers of commercial refrigeration equipment that qualify as small businesses.  DOE must determine whether the rule would result in a significant impact on a substantial number of small entities. 

## Review Under the Regulatory Flexibility ActBuilding Technologies Program eere.energy.gov 48 

## Burden of Testing & Regulatory Review

• Impacts are associated with the cost of testing and length of time it takes to perform the tests. • DOE quantified the impact on manufacturers by assessing the incremental increase in cost of testing compared to the annual average value added.

– Cost of testing estimated as $5,000 and one week of laboratory time per unit to perform AHRI 1200 - 2010.

– Annual average value added is the cost of materials, supplies, containers, fuel, purchased electricity, and contract work subtracted from the cost of shipments . 

## Definitions and AssumptionsBuilding Technologies Program eere.energy.gov 49 

## Burden of Testing & Regulatory Review

• Measures that may affect burdens include:

– Provisions for testing cases with night curtains.
• Measures that are not expected to affect burdens include:

– Updating DOE test procedure references to AHRI 1200 - 2010 and AHAM HRF - 1 - 2008.

– Equivalent to current burden of test.

– Provisions for testing cases with occupancy sensors.

– Minimal increase due to additional calculations.

– Provisions for testing cases at temperatures greater than 38 F ( ± 2 ° F).

– Equivalent to current burden of test. 

## Assessment of BurdenBuilding Technologies Program eere.energy.gov 50 

### • Number of open cases

– DOE found that the larger manufacturers sell more open cases than smaller manufacturers.

– DOE estimates that for both small and large manufacturers who offer open cases, open cases that could be sold with night curtains comprised 20 percent of total models (between 1 and 50 models).

– A single small manufacturer produces majority of all open cases produced by small manufacturers. 

### • Number of additional tests that will be performed

– Units that are compliant without optional night curtains installed do not require additional testing with night curtains installed.

– Half of the cases will require two tests. 

### • Costs associated with extra test

– DOE found the incremental cost of running the extra tests ranged from approximately 0.3 to 0.6 percent of annual average value added. 

## Burden of Testing & Regulatory Review Potential Burden Due to Night Curtain Provision Based on :Building Technologies Program eere.energy.gov 51 

### • Aligning DOE test procedure with industry standards AHRI 1200 - 2010 and AHAM HRF - 1 - 2008.

– Should not increase burden due to similar testing requirements. 

### • Provisions for testing cases with occupancy sensors.

– Calculation methodology does not require additional testing.

– Manufacturers only required to show compliance of units with lighting occupancy controls installed if unit without controls is noncompliant.

– DOE estimates a 15 percent increase in calculation intensity, which corresponds to <0.01 percent increase in total burden or $50 per unit.

– If additional calculation required for 50 percent of units, the total incremental increase in cost of testing will range from $50 to $6,500, or < 0.0005 percent of the annual average value added for all CRE manufacturers. 

### • Provisions for testing cases at temperatures greater than 38 **°** F ( ± 2 **°** F).

– With identical 24- hour test, DOE believes that this will not increase the burden of test. 

## Burden of Testing & Regulatory Review Potential Burden Due to Other Provisions:Building Technologies Program eere.energy.gov 52 

## Burden of Testing & Regulatory Review

Item 9 - DOE seeks comment on its certification that the proposed test procedure changes will not have a significant impact on a substantial number of small entities. Request for CommentBuilding Technologies Program eere.energy.gov 53 Proposed Test Procedure Amendments Burden of Testing & Regulatory Review Closing Remarks, Contacts & Information 

## Public Meeting Topics

4 5 6 Rulemaking History & Timelines 2 Test Procedure Rulemaking Scope 3 1 Welcome, Introductions & Opening RemarksBuilding Technologies Program eere.energy.gov 54 

## Closing Remarks, Contacts & Information



## At this time DOE welcomes any closing remarks from interested parties.Building Technologies Program eere.energy.gov 55 

## Closing Remarks, Contacts & Information Please reference all correspondence for this rulemaking with the following information:

– Title: Commercial Refrigeration Equipment Rulemaking,

– Docket Number: EERE - 2010- BT-TP-0034, and

– Regulatory Identification Number: RIN 1904-AC40 Email : CRE - 2010-TP-0034@ee.doe.gov Postal Mail: Hand Delivery or Courier: Ms. Brenda Edwards U.S. Department of Energy Building Technologies Program Mailstop: EE - 2J, Room 1J - 018 1000 Independence Avenue, SW Washington, DC 20585 -0121 Ms. Brenda Edwards U.S. Department of Energy Building Technologies Program, 6th Floor 950 L’Enfant Plaza, SW Washington, DC 20024 Tel: 202 - 586 - 2945 

###  Comment period ends: January 24, 2011 

## CRE TP Comment Submittal InformationBuilding Technologies Program eere.energy.gov 56 

## Closing Remarks, Contacts & Information

• DOE Appliance Standards

– http://www1.eere.energy.gov/buildings/appliance_standards/ • Commercial Refrigeration Equipment Rule

– http://www2.eere.energy.gov/buildings/appliance_standards/commercial/refriger ation_equipment.html • Contact Charles Llenza, Project Manager, from the Appliance Standards Program for additional information:

– Charles.Llenza@ee.doe.gov

– 202.586.2192
• Contact John Cymbalsky, Supervisor, from the Appliance Standards Program for additional information:

– John.Cymbalsky@ee.doe.gov

– 202.287.1692 

## CRE TP WebPages and DOE ContactsBuilding Technologies Program eere.energy.gov 57 

# Back Up SlidesBuilding Technologies Program eere.energy.gov 58 

## Lighting Occupancy Sensors and Scheduled Controls – Variables CECA = the alternate compressor energy consumption (kilowatt - hours); LEC sc = the lighting energy consumption of internal case lights with lighting occupancy sensors and controls deployed (kilowatt - hours); P li = the rated power of lights when they are fully on (watts); P li (off) = the power of lights when they are off (watts); P li (dim) = the power of lights when they are dimmed (watts); TDEC o = the total daily energy consumption with lights fully on, as measured by AHRI Standard 1200 - 2010 (kilowatt- hours); t dim = the time period which the lights are dimmed due to the use of lighting occupancy sensors or scheduled controls (hours); t dim,controls = the time case lighting is dimmed due to the use of lighting controls (hours); t dim,sensors = the time case lighting is dimmed due to the use of lighting occupancy sensors (hours); t l = the time period when lights would be on without lighting occupancy sensors or controls (24 hours); t off = the time period which the lights are off due to the use of lighting occupancy sensors or scheduled controls (hours); t off,controls = the time case lighting is off due to the use of lighting controls (hours); t off,sensors = the time case lighting is off due to the use of lighting occupancy sensors (hours); and t sc = the time period when lighting is fully on with lighting occupancy sensors and controls enabled (hours).Building Technologies Program eere.energy.gov 59 

## Lighting Occupancy Sensors and Controls

– Proposed Test Method

1) Calculate energy use of lighting within the refrigerated volume . • DOE proposes to use an analytical method similar to equation 4, section 5.2.3 of AHRI Standard 1200 - 2010:

Where: LEC sc = lighting energy consumption of internal case lights with lighting occupancy sensors and controls deployed (kilowatt - hours); P li = rated power of lights when they are fully on (watts); P li (off) = power of lights when they are off (watts); P li (dim) = power of lights when they are dimmed (watts); t sc = time period when lighting is fully on with lighting occupancy sensors and controls enabled (hours); t off = time period which the lights are off due to the use of lighting occupancy sensors or scheduled controls (hours); and t dim = time period which the lights are dimmed due to the use of lighting occupancy sensors or scheduled controls (hours). 

## ( **) (**  **)** 

# ( **) (**  **)** 

# ( **)** 

# ( **) (**  **)** li sc off dim li off li dim sc P t P t P t LEC 1000 **×+ ×+ × =**  Eq. 1Building Technologies Program eere.energy.gov 60 

## Lighting Occupancy Sensors and Controls – Proposed Test Method (cont.)
• The time the case lighting is dimmed or off will be calculated as follows:

Where: t off = time period which the lights are off due to the use of lighting occupancy sensors or scheduled controls (hours); t dim = time period which the lights are dim due to the use of lighting occupancy sensors or scheduled controls (hours); t off,controls = time case lighting is off due to the use of lighting controls (hours); t dim,controls = time case lighting is dimmed due to the use of lighting controls (hours); t off,sensors = time case lighting is off due to the use of lighting occupancy sensors (hours); and t dim,sensors = time case lighting is dimmed due to the use of lighting occupancy sensors (hours). off off ,sensors off ,controls dim dim,sensors dim,controls t t t t t t **= + = +**  Eq. 2Building Technologies Program eere.energy.gov 61 

## Lighting Occupancy Sensors and Controls – Proposed Test Method (cont.)
• The time the case lighting is fully on with lighting occupancy sensors and controls enabled during the 24- hour test will be calculated as follows:

Where: t off = time period which the lights are off due to the use of lighting occupancy sensors or scheduled controls (hours); t dim = time period which the lights are dim due to the use of lighting occupancy sensors or scheduled controls (hours); t sc = time period when lighting is fully on with lighting occupancy sensors and controls enabled (hours); t l = time period when lighting would be on without lighting occupancy sensors or controls (24 hours); with the sum of all toff and tdim from both lighting occupancy sensors and controls not to exceed 10.8 hours. sc l off dim t t t t **=− −** Eq. 3Building Technologies Program eere.energy.gov 62 

## Example Lighting Calculation

• Example for a case where lighting that is dimmed throughout the day by occupancy sensors and is turned off completely by scheduled controls during closing hours: l off,sensors dim,sensors off,controls dim,controls off off ,sensors off ,controls dim dim,sensors dim,controls 24 hours 0

2.8 hours 8 hours

0 = 0 + 8 hours = 8 hours = 2.8 hours + 0 = 2.8 hour t t t t t t t t t t t **= + = +**  **= =**  **= =** 

**=**

sc l off dim s = 24 hours - 8 hours - 2.8 hours = 13 t t .2 t h s t our **=− −** 

## ( **) (**  **)** 

# ( **) (**  **)** 

# ( **)** 

# ( **) (**  **)** li sc off dim li off li dim sc P t P t P t LEC 1000 **×+ ×+ × =**  Eq. 1Building Technologies Program eere.energy.gov 63 

## Lighting Occupancy Sensors and Controls – Proposed Test Method (cont.) 2) Calculate decreased energy use from reduction in heat load from lights that are located inside the refrigerated volume . • For remote condensing and self- contained equipment, a modified calculation of “Alternate Components Indirect Effects” from section 5.4.2 of AHRI 1200- 2010 can be applied:
Where: CECA= alternate compressor energy consumption (kilowatt - hours); LEC sc = lighting energy consumption of internal case lights with lighting occupancy sensors and controls deployed (kilowatt - hours); P li = rated power of lights when they are fully on (watts); t sc = time period when lighting is fully on with lighting occupancy sensors and controls enabled (hours); t l = time lighting would be on without lighting occupancy sensors or controls (24 hours); and EER = energy efficiency ratio from Table 1 in AHRI Standard 1200 - 2010 for remote condensing equipment and the values shown in the following table for self- contained equipment (British thermal units/watt). sc li l A 

### 3.4121 (LEC P t /1000) CEC 0.75 EER **× −× = ×**  Eq. 4Building Technologies Program eere.energy.gov 64 

## Calculation of Alternate Compressor Energy Consumption

• Note : The CECA includes a multiplication factor of 0.75 to account for the fact that not all of the heat produced from the lights will impact the compressor load. li l sc A (P t 1000 

### 3.4121 (LEC ) CEC 0.75 EER ) **×** 

### × − **= ×** Eq. 4 Operating Temperature Class EER Btu/W Medium 11.26 Low 7.14 Ice Cream 4.80 Note: 1. EER values for operating temperature classes are calculated based on the average EER value of all equipment in that class which was analyzed as part of the previous (2009) rulemaking. This does not include equipment for which standards were set by Congress in EPACT 2005 (VCT, VCS, HCT, HCS, and SOC at M and L temperatures) or classes for which standard were set using extension multipliers in the 2009 rulemaking (VOP.SC.L, SVO.SC.L, VOP.SC.I, SVO.SC.I, HZO.SC.I, VOP.SC.I, SVO.SC.I, HZO.SC.I, HCS.SC.I, SOC.SC.I). 2. These values only represent compressor EER and do not include condenser fan energy use. 

### EER for Self-Contained Commercial Refrigerated Display Merchandisers and Storage CabinetsBuilding Technologies Program eere.energy.gov 65 

## Calculation of Daily Energy Consumption

– Remote Condensing
• Different calculations for remote condensing and self- contained equipment: A. For remote condensing equipment

– Can continue to apply AHRI Standard 1200- 2010, section 5.4, “Alternate Component Indirect Effects”:

Where: CEC R = reduced compressor energy consumption (kilowatt - hours); CEC = compressor energy consumption as measured by AHRI Standard 1200 (kilowatt- hours); and CECA = alternate compressor energy consumption (kilowatt - hours). R A CEC CEC CEC **= +** Eq. 5Building Technologies Program eere.energy.gov 66 

## Calculation of Daily Energy Consumption – Remote Condensing (cont.)

– Substitute CEC R and LEC sc to calculate combined daily energy consumption (CDEC):

Where: CDEC = combined daily energy consumption (kilowatt - hours); CEC R = reduced compressor energy consumption (kilowatt - hours); FEC = fan energy consumption (kilowatt - hours); LEC sc = lighting energy consumption with lighting sensors and controls deployed kilowatt- hours); AEC = anti - condensate energy consumption (kilowatt - hours); DEC = defrost energy consumption (kilowatt - hours); and PEC = condensate evaporator pan energy consumption (kilowatt - hours). R sc CDEC CEC FEC LEC AEC DEC PEC **= ++ + + +** Eq. 6Building Technologies Program eere.energy.gov 67 

## Calculation of Daily Energy Consumption

– Self-Contained
• Different calculations for remote condensing and self- contained equipment: B. For self- contained equipment

– CECA and LEC sc used directly with the total daily energy consumption (TDEC) as measured by AHRI Standard 1200- 2010 with the lights fully on:
Where: TDEC o = total daily energy consumption with lights fully on, as measured by AHRI Standard 1200- 2010 (kilowatt- hours); P li = rated power of lights when they are fully on (watts); t l = time period when lights would be on without lighting occupancy sensors or controls (24 hours); CECA = alternate compressor energy consumption (kilowatt - hours); and LEC sc = lighting energy consumption with lighting occupancy sensors and controls deployed (kilowatt- hours). li l o A sc (P t ) TDEC TDEC CEC L EC 1000 **×  **  **= +− −  **  ** ** Eq. 7Building Technologies Program eere.energy.gov 68 • For equipment that has the option of being sold with night curtains or lighting occupancy sensors or controls installed, additional testing may be required:

• Additionally, cases sold ONLY with night curtains or lighting occupancy sensors installed will only require one test . 

## Proposed Test Procedure Amendments

1. Test case without night curtains or lighting occupancy sensors or controls installed.
2. Test case with night curtains or lighting occupancy sensors or controls installed. Only this test is necessary to show compliance with DOE energy conservation standards.  Case can be sold with or without night curtains/lighting occupancy sensors controls. 

### I I f passes I If fails I I f passes Two tests are required to show compliance with DOE energy conservation standards.  Case can ONLY be sold in configuration that meets ECS. 

## Burden of Test – Energy Conservation FeaturesBuilding Technologies Program eere.energy.gov 69 

## Requests for Comment in TP NOPR Item 1 - DOE requests comment on its conclusion that the proposed test procedure amendments would not be unduly burdensome to conduct. Item 2 - DOE requests comment on the burden to manufacturers associated with testing NSF Type II equipment at the standard test condition. Specifically, DOE requests comment and data on the ability of NSF Type II equipment to show compliance with DOE energy conservation standards when tested at the DOE standard rating condition. Item 3 - DOE requests comment on the burden to manufacturers associated with testing energy efficiency technologies other than those explicitly accounted for in this test procedure revision, namely night curtains and lighting occupancy sensors and scheduled control. Item 4 - DOE requests comment on updating the referenced industry test procedures to the most current versions. Item 5 - DOE requests comment on the proposed incorporation of night curtains into the DOE test procedure. DOE is especially interested in the appropriateness of the proposed 6 - hour test period when night curtains are deployed. Item 6 - DOE requests comment on the proposed calculation method for treatment of lighting occupancy sensors and controls in the DOE test procedure for commercial refrigeration equipment. Item 7 - DOE seeks comments on the number of small businesses in the CRE market. Item 8 - DOE seeks comment on its certification that the proposed test procedure changes will not have a significant impact on a substantial number of small entities.Building Technologies Program eere.energy.gov 70 

## Additional TP NOPR Comments Additional Comment A - DOE welcomes comment on the effective date of the test procedure Final Rule . Additional Comment B - DOE welcomes on the coverage of secondary coolant systems in the DOE test procedure. Specifically, DOE requests comment on if the DOE test procedure should include secondary coolant systems and, if so, how the testing of this could be accommodated in the DOE test procedure. Additional Comment C - DOE requests comment on the proposed definition for night curtain. Additional Comment D - DOE requests comment on the proposed definition for lighting occupancy sensor.